cell_clear.c File Reference

Include dependency graph for cell_clear.c:

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Functions
static unsigned	convert_color (enum pipe_format srcFormat, unsigned srcColor, enum pipe_format dstFormat)
	Authors Brian Paul.
void	cell_clear_surface (struct pipe_context *pipe, struct pipe_surface *ps, unsigned clearValue)
	Called via pipe->clear().

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Function Documentation

void cell_clear_surface	(	struct pipe_context *	pipe,
		struct pipe_surface *	ps,
		unsigned	clearValue
	)

Called via pipe->clear().

Definition at line 70 of file cell_clear.c.

References cell_context::cbuf_map, cell_batch_alloc(), CELL_CMD_CLEAR_SURFACE, cell_context(), cell_update_derived(), convert_color(), cell_context::dirty, pipe_surface::format, cell_context::framebuffer, cell_command_clear_surface::opcode, PIPE_BUFFER_USAGE_GPU_WRITE, PIPE_FORMAT_A8R8G8B8_UNORM, pipe_context::screen, cell_command_clear_surface::surface, pipe_screen::surface_map, cell_command_clear_surface::value, and pipe_framebuffer_state::zsbuf.

{
   struct pipe_screen *screen = pipe->screen;
   struct cell_context *cell = cell_context(pipe);
   uint surfIndex;

   if (cell->dirty)
      cell_update_derived(cell);


   if (!cell->cbuf_map[0])
      cell->cbuf_map[0] = screen->surface_map(screen, ps,
                                              PIPE_BUFFER_USAGE_GPU_WRITE);

   if (ps == cell->framebuffer.zsbuf) {
      /* clear z/stencil buffer */
      surfIndex = 1;
   }
   else {
      /* clear color buffer */
      surfIndex = 0;

      if (ps->format != PIPE_FORMAT_A8R8G8B8_UNORM) {
         clearValue = convert_color(PIPE_FORMAT_A8R8G8B8_UNORM, clearValue,
                                    ps->format);
      }
   }


   /* Build a CLEAR command and place it in the current batch buffer */
   {
      struct cell_command_clear_surface *clr
         = (struct cell_command_clear_surface *)
         cell_batch_alloc(cell, sizeof(*clr));
      clr->opcode = CELL_CMD_CLEAR_SURFACE;
      clr->surface = surfIndex;
      clr->value = clearValue;
   }
}

static unsigned convert_color	(	enum pipe_format	srcFormat,
		unsigned	srcColor,
		enum pipe_format	dstFormat
	)			[static]

Authors Brian Paul.

Convert packed pixel from one format to another.

Definition at line 52 of file cell_clear.c.

References util_pack_color_ub(), and util_unpack_color_ub().

{
   ubyte r, g, b, a;
   unsigned dstColor;

   util_unpack_color_ub(srcFormat, &srcColor, &r, &g, &b, &a);
   util_pack_color_ub(r, g, b, a, dstFormat, &dstColor);

   return dstColor;
}

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